Subsidies from anthropogenic resources alter diet, activity, and ranging behavior of an apex predator (Canis lupus).

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ID: 47516
2019
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Abstract
Acquisition of resources can be costly and individuals are predicted to optimize foraging strategies to maximize net energy gain. Wolves (Canis lupus) would be expected to scavenge on subsidies from anthropogenic resources when these resources provide an energetic benefit over the capture of wild prey. We examined the effects of subsidies from anthropogenic resources in the form of livestock carcass dumps (LCDs) on wolf space use, activity, tortuosity, and diet in portions of North America's northern hardwood/boreal ecosystem. We fitted 19 wolves with global positioning system collars during May-August of 2009-2011 and 2013-2015. Wolves with LCDs within their home ranges used areas adjacent to LCDs greater than non-LCD sites and had decreased home ranges and activity as compared to wolves without LCDs in their home ranges. Additionally, cattle comprised at least 22% of wolf diet from scavenging in areas with LCDs present as compared to no cattle in the diet of wolves without access to LCDs. Subsidies from anthropogenic resources in the form of LCDs can serve as attractants for wolves and alter wolf diet, activity, and ranging behavior. Apex predators may alter their behavior where subsidies from anthropogenic resources occur and management of these subsidies should be considered when attempting to reduce the impacts of humans on wolf behavior.
Reference Key
petroelje2019subsidiesscientific Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Petroelje, Tyler R;Belant, Jerrold L;Beyer, Dean E;Svoboda, Nathan J;
Journal Scientific reports
Year 2019
DOI
10.1038/s41598-019-49879-3
URL
Keywords
social learning copying equus caballus human demonstrator interspecies specific social learning social enhancement

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